When the cloud platform creates a VM resource, it needs to call multiple components, such as Nova, Cinder, Glance, etc., and the authentication and authentication between the components depends on…

Question

Options

• AFreezer
• BWatcher
• CKeystone
• DZun

• A
  6% (3)
• B
  2% (1)
• C
  80% (40)
• D
  12% (6)

Explanation

Keystone is OpenStack's Identity Service, acting as the central authentication and authorization hub that all other components - Nova (compute), Cinder (block storage), Glance (image), and others - rely on to verify identity and issue tokens before any inter-service communication occurs. Freezer (option A) is a backup and restore service, unrelated to authentication. Watcher (option B) is a resource optimization and workload balancing service. Zun (option D) is a container management service for running application containers.

Memory tip: Think of Keystone as the literal keystone in an arch - it is the central piece that locks all the other blocks (services) together and keeps the whole structure from collapsing.

No community discussion yet for this question.